Turkey could hold a referendum on changing the constitution and introducing a presidential system before the spring, the Turkish Justice Minister Bekir Bozdag said.
"If the parliament puts the issue on its agenda and makes a quick decision, the referendum will be brought to the people quickly, even before the spring," Reuters cited the minister as saying.
Earlier this week, the nationalist MHP opposition appeared to signal it would back a presidential system, meaning the plan could win enough support in parliament to go to a referendum.
"From MHP leader Devlet Bahceli's comments, I had an understanding that he would back the presidential system proposal in its parliament process," Bozdag said.
He said the proposal would retain parliament in its current form, and protect Turkey's unified structure.
